| Round Rock to Mombris | 5,302.14 mi (8,532.97 km) |
| Round Rock to Monchengladbach | 5,159.14 mi (8,302.83 km) |
| Round Rock to Monschau | 5,174.56 mi (8,327.65 km) |
| Round Rock to Montabaur | 5,238.26 mi (8,430.17 km) |
| Round Rock to Moosburg | 5,467.02 mi (8,798.33 km) |
| Round Rock to Morbach | 5,233.37 mi (8,422.29 km) |
| Round Rock to Morfelden-Walldorf | 5,282.60 mi (8,501.52 km) |
| Round Rock to Morlenbach | 5,303.02 mi (8,534.39 km) |
| Round Rock to Morsbach | 5,218.88 mi (8,398.98 km) |
| Round Rock to Mosbach | 5,327.67 mi (8,574.05 km) |
| Round Rock to Mosigkau | 5,347.62 mi (8,606.16 km) |
| Round Rock to Mossingen | 5,359.15 mi (8,624.72 km) |
| Round Rock to Much | 5,205.26 mi (8,377.05 km) |
| Round Rock to Mucheln | 5,352.66 mi (8,614.27 km) |
| Round Rock to Muhlacker | 5,330.70 mi (8,578.94 km) |
